One possible version: With the growing population, many problems appear. For example, we haven't enough food for everyone in the world, many people are out of work, the cities are too crowed, air and water get dirty... China is a big country of agriculture with the largest population in the world. There are still many people living below the poverty line. We should carry on the one-child policy to control the growing of the population. If each family has only one healthy child, we can all live a happy life. Do you think so?
Dear Rose, I'm very glad to know that you are coming to visit me. ________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ Yours, Mary